Dustproof cover and bearing with same

Abstract

The utility model discloses a dustproof cover, which comprises an upper dustproof cover and a lower dustproof cover, the upper dustproof cover and the lower dustproof cover have the same structure, the upper dustproof cover and the lower dustproof cover are both made of components made of flexible rubber materials, the lower dustproof cover is composed of an I-shaped outer ring and a dustproof inner ring, the I-shaped outer ring and the dustproof inner ring are integrally formed by injection molding, and the I-shaped outer ring and the dustproof inner ring are made of flexible rubber materials. Hollow arc bases are installed on the two sides of the top end of the I-shaped outer ring, and bidirectional elastic positioning structures are arranged in the hollow arc bases. Groove openings do not need to be designed and manufactured at the upper end and the lower end of the bearing any more, manufacturing complexity is reduced, production cost is reduced, complex disassembly steps are not needed, and only the sliding knob needs to be pressed easily to enable the movable end of the bidirectional elastic positioning structure to be separated from the hollow cavity and the columnar groove.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a dust cover and a bearing with the dust cover. Background Art

[0002] Bearing is a commonly used mechanical element, which is a rotating part used to support and reduce friction. The dust covers at the upper and lower ends of the bearing are to protect the inside of the bearing from the invasion of external impurities and dust, so as to ensure the normal operation of the bearing and extend its service life. The bearing dust covers are usually made of wear-resistant and corrosion-resistant materials, such as rubber, metal or plastic. They are installed at the upper and lower ends of the bearing, tightly fitting on the outer ring of the bearing to form a closed space to prevent external particles from entering the bearing. However, when the dust cover is installed to the upper and lower ends of the bearing, it is usually fixed by groove inlay. The groove inlay method requires the design and manufacture of corresponding grooves and notches at the upper and lower ends of the bearing, which increases the complexity of manufacturing and installation. Especially for some small bearings or bearings with special structures, more sophisticated processing and installation steps are required, which increases the production cost and manufacturing difficulty. When the bearing needs to be replaced or maintained, the groove inlay method will make the replacement of the dust cover more cumbersome, and precise disassembly and reinstallation must be performed to ensure the integrity of the dust cover and the bearing. Utility Model Content

[0003] The purpose of the utility model is to provide a dust cover to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dust cover, comprising an upper dust cover and a lower dust cover, the upper dust cover and the lower dust cover have the same structure, and both the upper dust cover and the lower dust cover are made of flexible rubber material, the lower dust cover is composed of an I-shaped outer ring and a dustproof inner ring, the I-shaped outer ring and the dustproof inner ring are integrally injection molded, and hollow arc seats are installed on both sides of the top of the I-shaped outer ring, and a bidirectional elastic positioning structure is arranged inside the hollow arc seat.

[0005] Preferably, through holes are provided at the edge positions of the bottom ends of the I-shaped outer rings.

[0006] Preferably, an annular inner lip is fixed to one end of the inner part of the dustproof inner ring, and a storage cavity and a countersunk portion are respectively provided above and below the annular inner lip, and the interior of the storage cavity is filled with lubricating grease.

[0007] Preferably, a second inner shaft hole is provided inside the annular inner lip.

[0008] Preferably, an upper annular edge is provided at the top end of the dustproof inner ring.

[0009] The utility model also provides a bearing with the dust cover, the bearing includes the above-mentioned dust cover, the bearing is composed of an outer ring, a ball unit, and an inner ring, the inner ring is arranged between the outer ring and the ball unit, the interior of the inner ring is provided with an inner shaft hole, the outer walls on both sides of the bearing are provided with hollow cavities, the bottom end of the bearing is provided with an annular cutting groove that is mutually embedded with the upper annular edge, the hollow cavity is arranged on the outer wall of the outer ring, the top and bottom of the hollow cavity are provided with columnar grooves connected to the movable end of the bidirectional elastic positioning structure, and the outer wall of the hollow arc seat is provided with a sliding button for driving the bidirectional elastic positioning structure to move.

[0010] Preferably, the bidirectional elastic positioning structure includes a coil spring installed on the top and bottom of the hollow arc seat, a sliding tongue is fixed to one end of the coil spring close to the center point of the hollow arc seat, one end of the sliding tongue extends to the interior of the hollow cavity, a pin is installed at the bottom end of the sliding tongue, the pin and the columnar groove are plugged into each other, and the other end of the sliding tongue passes through the outside of the hollow arc seat and is interconnected with the sliding button.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the dust cover is provided with a two-way elastic positioning structure and a hollow cavity and other structures that cooperate with each other, and there is no need to design and manufacture grooves and notches at the upper and lower ends of the bearing, thereby reducing the complexity of manufacturing and reducing production costs. There is no need to perform complicated disassembly steps, and only a slide button needs to be easily pressed to separate the movable end of the two-way elastic positioning structure from the hollow cavity and the columnar groove, thereby disassembling the bearing and the lower dust cover, and conveniently replacing or maintaining the dust cover, reducing the difficulty and cost of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0016] Figure 5 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0017] In the figure: 1. bearing; 101. outer ring; 102. ball unit; 103. inner ring; 104. inner shaft hole one; 2. upper dust cover; 3. lower dust cover; 301. upper annular edge; 4. I-shaped outer ring; 5. dustproof inner ring; 501. annular inner lip; 502. inner shaft hole two; 6. storage cavity; 7. countersunk portion; 8. hollow arc seat; 9. sliding button; 10. bidirectional elastic positioning structure; 1001. sliding tongue; 1002. spiral spring; 1003. pin; 11. hollow cavity; 12. columnar groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 The utility model provides an embodiment: a dust cover, including an upper dust cover 2 and a lower dust cover 3, the upper dust cover 2 and the lower dust cover 3 have the same structure, and the upper dust cover 2 and the lower dust cover 3 are both made of flexible rubber material, the lower dust cover 3 is composed of an I-shaped outer ring 4 and a dustproof inner ring 5, the I-shaped outer ring 4 and the dustproof inner ring 5 are integrally injection molded, and the edge position of the bottom end of the I-shaped outer ring 4 is provided with through holes;

[0020] Hollow arc seats 8 are installed on both sides of the top of the I-shaped outer ring 4, and a bidirectional elastic positioning structure 10 is arranged inside the hollow arc seat 8;

[0021] The top of the dustproof inner ring 5 is provided with an upper annular edge 301, and the bottom of the bearing 1 is provided with an annular cut-out groove that interlocks with the upper annular edge 301, so that the upper annular edge 301 at the top of the lower dust cover 3 enters the annular cut-out groove at the bottom of the bearing 1, that is, the bearing 1 and the lower dust cover 3 are butted, and at this time, the I-shaped outer ring 4, the dustproof inner ring 5 and the annular inner lip 501 dustproof and seal the bottom opening of the bearing 1;

[0022] An annular inner lip 501 is fixed to one end of the inner dustproof ring 5, and a storage cavity 6 and a countersunk hole 7 are respectively arranged above and below the annular inner lip 501. The storage cavity 6 is filled with lubricating grease, and an inner shaft hole 2 502 is arranged inside the annular inner lip 501. The staff can fill the storage cavity 6 with lubricating grease, which allows the continuous supply of lubricating grease required by the bearing and related parts, ensuring that the mechanical system always maintains sufficient lubrication during operation, reducing wear and friction, and extending the life of the bearing and other moving parts;

[0023] Secondly, the utility model also provides a bearing with the dust cover, the bearing includes the above-mentioned dust cover, the bearing 1 is composed of an outer ring 101, a ball monomer 102, and an inner ring 103, the inner ring 103 is arranged between the outer ring 101 and the ball monomer 102, the inner ring 103 is provided with an inner shaft hole 104, the hollow cavity 11 is arranged on the outer wall of the outer ring 101, the outer ring 101, the ball monomer 102, the inner ring 103 and the inner shaft hole 104 constitute the bearing 1, the inner ring 103 rolls between the outer ring 101 and the inner ring 103, compared with sliding friction, this rolling friction mode reduces energy loss, reduces friction loss, and improves the efficiency of the bearing;

[0024] The outer walls of both sides of the bearing 1 are provided with hollow cavities 11, and the top and bottom of the hollow cavity 11 are provided with columnar grooves 12 connected to the movable ends of the bidirectional elastic positioning structure 10, and the outer wall of the hollow arc seat 8 is provided with a sliding button 9 for driving the bidirectional elastic positioning structure 10 to move. Since the upper dust cover 2 and the lower dust cover 3 are made of flexible rubber material, the staff manually bends and deforms the lower dust cover 3, and manually presses the sliding button 9, so that the movable end of the bidirectional elastic positioning structure 10 is retracted until the movable end of the bidirectional elastic positioning structure 10 can be plugged and locked with the hollow cavity 11 and the columnar groove 12 on the outer wall of the bearing 1. The bidirectional elastic positioning structure 10 includes a coil spring 1002 installed at the top and bottom of the hollow arc seat 8, and a sliding tongue 1001 is fixed at one end of the coil spring 1002 close to the center point of the hollow arc seat 8, and one end of the sliding tongue 1001 The bottom end of the sliding tongue 1001 is provided with a pin 1003, which is inserted into the columnar groove 12. The other end of the sliding tongue 1001 passes through the outside of the hollow arc seat 8 and is connected with the sliding button 9. The staff manually pinches and presses the sliding button 9. At this time, the two sliding buttons 9 are close to each other, so that the sliding button 9 drives the corresponding sliding tongue 1001 and the coil spring 1002 to move upward until the coil spring 1002 withdraws from the outside of the columnar groove 12. At this time, the coil spring 1002 is in a stretched state, and then the staff manually bends the lower dust cover 3 and deforms it until the sliding tongue 1001 withdraws from the outside of the hollow cavity 11, thereby releasing the connection between the lower dust cover 3 and the bearing 1. Compared with the groove line fixing method, the improved structure can better maintain the stability of the dust cover under high-speed rotation, vibration or impact environment, thereby ensuring its effective sealing effect.

[0025] When the embodiment of the present application is in use, the staff first takes out the bearing 1, the upper dust cover 2 and the lower dust cover 3 to be assembled. The upper dust cover 2 and the lower dust cover 3 have the same structure, and the upper dust cover 2 and the lower dust cover 3 can be respectively installed on the top and bottom openings of the bearing 1 in the same way, that is, the staff takes out the lower dust cover 3. Since the upper dust cover 2 and the lower dust cover 3 are made of flexible rubber material, the staff manually bends and deforms the lower dust cover 3, and manually presses the sliding button 9, so that the movable end of the two-way elastic positioning structure 10 is retracted until the movable end of the two-way elastic positioning structure 10 can be plugged and locked with the hollow cavity 11 and the columnar groove 12 on the outer wall of the bearing 1, and then the top of the lower dust cover 3 is made The upper annular edge 301 enters into the annular cut-out groove at the bottom end of the bearing 1, that is, the bearing 1 and the lower dust cover 3 are connected. At this time, the I-shaped outer ring 4, the dustproof inner ring 5 and the annular inner lip 501 dustproof and seal the bottom end opening of the bearing 1, and the inner shaft hole 502 is for the shaft body to pass through. In this process, it is no longer necessary to design and manufacture grooves and notches at the upper and lower ends of the bearing 1, which reduces the complexity of manufacturing and reduces production costs. There is no need to perform complicated disassembly steps. You only need to easily press the slide button 9 to separate the movable end of the bidirectional elastic positioning structure 10 from the hollow cavity 11 and the columnar groove 12, thereby disassembling the bearing 1 and the lower dust cover 3, and conveniently replacing or maintaining the dust cover, reducing the difficulty and cost of maintenance.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust cover, Features: The invention comprises an upper dust cover (2) and a lower dust cover (3), wherein the upper dust cover (2) and the lower dust cover (3) have the same structure and are both made of flexible rubber material. The lower dust cover (3) is composed of an I-shaped outer ring (4) and a dustproof inner ring (5), wherein the I-shaped outer ring (4) and the dustproof inner ring (5) are integrally injection molded, and hollow arc seats (8) are installed on both sides of the top of the I-shaped outer ring (4), and a bidirectional elastic positioning structure (10) is arranged inside the hollow arc seat (8).

2. A dust cover according to claim 1, Features: Through holes are provided at the edge positions of the bottom ends of the I-shaped outer ring (4).

3. A dust cover according to claim 1, Features: An annular inner lip (501) is fixed to one end of the inner dustproof ring (5), and a storage cavity (6) and a countersunk hole (7) are respectively provided above and below the annular inner lip (501), and the interior of the storage cavity (6) is filled with lubricating grease.

4. A dust cover according to claim 3, Features: The annular inner lip (501) is provided with an inner shaft hole 2 (502).

5. A dust cover according to claim 1, Features: An upper annular edge (301) is provided at the top end of the dustproof inner ring (5).

6. A bearing having the dust cover, It is characterized in that The bearing comprises a dust cover as claimed in any one of claims 1 to 5, the bearing comprising an outer ring (101), a ball body (102) and an inner ring (103), the inner ring (103) being arranged between the outer ring (101) and the ball body (102), the inner ring (103) being provided with an inner shaft hole (104), both sides of the outer wall of the bearing being provided with a hollow cavity (11), the bottom end of the bearing being provided with an annular cut-out groove which is mutually engaged with the upper annular edge (301), the hollow cavity (11) being arranged on the outer wall of the outer ring (101), the top and bottom of the hollow cavity (11) being provided with a columnar groove (12) which is connected to the movable end of the bidirectional elastic positioning structure (10), and the outer wall of the hollow arc seat (8) being provided with a sliding button (9) for driving the bidirectional elastic positioning structure (10) to move.

7. A bearing having the dust cover according to claim 6, Features: The bidirectional elastic positioning structure (10) comprises a coil spring (1002) installed at the top and bottom of the hollow arc seat (8); a sliding tongue (1001) is fixed to one end of the coil spring (1002) close to the center point of the hollow arc seat (8); one end of the sliding tongue (1001) extends into the interior of the hollow cavity (11); a pin shaft (1003) is installed at the bottom end of the sliding tongue (1001); the pin shaft (1003) and the columnar groove (12) are plugged into each other; the other end of the sliding tongue (1001) passes through the outside of the hollow arc seat (8) and is connected to the sliding button (9).

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